resolving to a nonexistent mx record

[Chip Mefford]

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Michael Varre wrote:
| Sorry if this ends up being the wrong list, but it seems like it's a DNS
| issue somewhere.
|
| The DNS servers in question are latest 8.x.  When my users send email to
| @twcny.rr.com 2/3 of the time they receive NDR's back saying:
Connected to
| 24.92.226.159 but connection died. That IP resolves to
nymx02.mgw.rr.com.  I
| dig twcny.rr.com for mx records and that doesn't exist.  RR tells me that
| used to be one of their MX's but no longer.

They appear to be mistaken.

Their name servers still point to it.

$ dig @dns-pri-01.nyroc.rr.com twcny.rr.com IN MX

; <<>> DiG 9.2.2 <<>> @dns-pri-01.nyroc.rr.com twcny.rr.com IN MX
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 40916
;; flags: qr aa rd; QUERY: 1, ANSWER: 7, AUTHORITY: 2, ADDITIONAL: 11

;; QUESTION SECTION:
;twcny.rr.com.                  IN      MX

;; ANSWER SECTION:
twcny.rr.com.           3600    IN      MX      10 nymx-2.nyroc.rr.com.
twcny.rr.com.           3600    IN      MX      10 nymx05.mgw.rr.com.
twcny.rr.com.           3600    IN      MX      20 nycmx01.mgw.rr.com.
twcny.rr.com.           3600    IN      MX      20 nycmx02.mgw.rr.com.
twcny.rr.com.           3600    IN      MX      30 usny.mgw.rr.com.
twcny.rr.com.           3600    IN      MX      100 vamx02.mgw.rr.com.
twcny.rr.com.           3600    IN      MX      10 nymx-1.nyroc.rr.com.

;; AUTHORITY SECTION:
twcny.rr.com.           43200   IN      NS      dns-pri-01.nyroc.rr.com.
twcny.rr.com.           43200   IN      NS      dns-sec-01.nyroc.rr.com.

;; ADDITIONAL SECTION:
nymx-1.nyroc.rr.com.    1800    IN      A       24.92.226.159
nymx-1.nyroc.rr.com.    1800    IN      A       24.92.226.164
nymx-1.nyroc.rr.com.    1800    IN      A       24.92.226.25
nymx-1.nyroc.rr.com.    1800    IN      A       24.92.226.31
nymx-2.nyroc.rr.com.    1800    IN      A       24.92.226.31
nymx-2.nyroc.rr.com.    1800    IN      A       24.92.226.159
nymx-2.nyroc.rr.com.    1800    IN      A       24.92.226.164
nymx-2.nyroc.rr.com.    1800    IN      A       24.92.226.25
nymx05.mgw.rr.com.      1842    IN      A       24.92.226.17
dns-pri-01.nyroc.rr.com. 3600   IN      A       24.92.226.100
dns-sec-01.nyroc.rr.com. 3600   IN      A       24.92.226.240

;; Query time: 475 msec
;; SERVER: 24.92.226.100#53(dns-pri-01.nyroc.rr.com)
;; WHEN: Wed Jul 21 12:45:45 2004
;; MSG SIZE  rcvd: 427



~  They didn't know how long ago
| it changed.


It hasn't changed. The address isn't any good anymore, they
need to update the zone for twcny.rr.com and remove that
MX entry.

$ dig @dns-pri-01.nyroc.rr.com nycmx02.mgw.rr.com IN A

; <<>> DiG 9.2.2 <<>> @dns-pri-01.nyroc.rr.com nycmx02.mgw.rr.com IN A
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4531
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 4, ADDITIONAL: 0

;; QUESTION SECTION:
;nycmx02.mgw.rr.com.            IN      A

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